diff options
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | libgpsd_core.c | 13 |
2 files changed, 12 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index f448f01b..9281214b 100644 --- a/configure.ac +++ b/configure.ac @@ -686,6 +686,8 @@ AC_MSG_CHECKING([for PPS time syncing support]) if test x"$ac_pps" = "xyes"; then AC_MSG_RESULT([yes]) AC_DEFINE([PPS_ENABLE], 1, [PPS time syncing support]) + AC_CHECK_HEADERS(pps.h) + dnl timepps.h needs pps.h AC_CHECK_HEADERS(timepps.h) else AC_MSG_RESULT([no]) diff --git a/libgpsd_core.c b/libgpsd_core.c index 1cef6f87..589be08f 100644 --- a/libgpsd_core.c +++ b/libgpsd_core.c @@ -257,6 +257,7 @@ static /*@null@*/ void *gpsd_ppsmonitor(void *arg) gpsd_report(LOG_PROG, "PPS Create Thread gpsd_ppsmonitor\n"); #if defined(HAVE_TIMEPPS_H) + int kpps_edge = 0; /* 0 = assert edge, 1 = clear edge */ pps_info_t pi; int kernelpps_handle = init_kernel_pps( session ); if ( 0 <= kernelpps_handle ) { @@ -429,9 +430,15 @@ static /*@null@*/ void *gpsd_ppsmonitor(void *arg) if (0 != ok) { #if defined(HAVE_TIMEPPS_H) if ( 0 <= kernelpps_handle ) { - /* ntpshm_pps() expects usec, not nsec */ - pi.clear_timestamp.tv_nsec /= 1000; - (void)ntpshm_pps(session, (struct timeval*)&pi.clear_timestamp); + /* pick the right edge */ + if ( kpps_edge ) { + /* ntpshm_pps() expects usec, not nsec */ + pi.clear_timestamp.tv_nsec /= 1000; + (void)ntpshm_pps(session, (struct timeval*)&pi.clear_timestamp); + } else { + pi.assert_timestamp.tv_nsec /= 1000; + (void)ntpshm_pps(session, (struct timeval*)&pi.assert_timestamp); + } } else #endif (void)ntpshm_pps(session, &tv); |